Gear puller



A. F. YOUNG GEAR FULLER Filed Feb. 9, 1922 Jufly 17, 1923- INVENTOR YTTQRNEY. v

Patentedilnly 17, 1923.

ET if ter r rt.

ADAM F. YOUNG, OF SAN JOSE, CALIFORNIA.

GEAR FULLER.

Application filed February 9, 1922. Serial No. 535,289.

citizen of the United States, and resident of San Jose, in the county ofSanta Clara and State of California, have invented certain new anduseful Improvements in Gear Pullers, of which the following is aspecification. I

My invention relates particularly to those forms of pullers used inremoving gears, pulleys, etc., from their shafts when the same have beensecurely fastened in place due to numerous causes.

It is the object of my invention to provide a puller of the characterindicated that is simple of construction, easy of operation, of fewmovable parts and one in which the greater the pulling pressure, thegreater the gripping force of the device upon the object being pulled.

In the drawing, Figure 1 is a side elevation of the device in anoperative position, the dotted lines indicating the position of thedevice when used on a larger gear.

Figure 2 is a sectional view on line 22 of Figure 1.

Referring more particularly to the drawing,-T show 1 a gear mounted uponshaft 2 and having a key as at 3. In contact with the outercircumference of gear 1 are two grip arms or members 1 and 5 formed asshown and having their upper ends pivotally mounted upon a support as 6by means of pins 7 and 8 respectively. I

Passing through an opening 9 in support 6 is a threaded screw 10 formedwith a hexagonal head 11 and a conical projection 12 at the endsthereof. This projection 12 fits into the center punch recess 13 whichis found in all shafts. It is noted that the opening 9 in the support islarger in diameter than the screw 10.

Mounted upon screw 10 is a member 1 1 having a flanges 1516 formedintegrally therewith and having pins 17-18 secured therein. Pivotallymounted upon pins 17-18 are two arms l9- 20, formed as shown. The griparms 4E5 pass through slots 2122 cut in members 19-20 respectively. Thelower curved ends of grip arms l5 have several notches cut therein as at2324-2526, the solid portion 27 of arms 1920 being formed so as to fitin said grooves.

The device being placed in position as shown the screw 10 is turned bymeans of a wrench. This tends to raise member 14: which is held securelyby arms 1920 which are held in grooves 25-25 upon arms 1-5 as shown.Thus the pressure is applied to the shaft and gear to force the sameapart- Due to the, construction shown the harder the force applied onscrew 10 the stronger .paratively slight application of power to head 11of screw 10.

It is to be understood, of course, that changes in form, construction,proportions and method of operation may be made within the scope of theappended claim.

I claim A pulling device comprising a screw, a

bar slidably mounted. thereon, opposed 1 clamps pivotally mounted onsaid bar, and having notches formed in the outer edges of their freeends, a threaded element engaging said screw, opposed slotted linkspivot- ADAM F. YOUNG.

